58 results about "Tirofiban Hydrochloride" patented technology

The invention discloses a process for the industrial production of Tirofiban hydrochloride, a medicament for treating angina.

The invention relates to a tirofiban hydrochloride lyophilized powder injection and a preparation method thereof, belonging to the field of western medicine preparation. The tirofiban hydrochloride lyophilized powder injection contains 1 part by weight of tirofiban hydrochloride and 0.5-100 parts by weight of dextran, and the pH value of solution before lyophilization is 1.8-2.6. Preferably, the weight ratio between the dextran and the tirofiban hydrochloride is 2:1-20:1. The tirofiban hydrochloride lyophilized powder injection has good composite dissolubility and stability as well as high safety.

The invention provides a preparation method of tirofiban hydrochloride. The preparation method has the advantages of simple salt forming conditions, low carbon and environmentally friendly characteristics, high product purity and no residue of organic solvents. The preparation method is characterized in that tirofiban is dissolved in 0.5 to 1.5 mol/L of a hydrochloric acid solution and based on the character that solubility of a tirofiban hydrochloride product in the hydrochloric acid solution can be influenced greatly by temperature variation, pure tirofiban hydrochloride crystals are obtained though cooling. The pure tirofiban hydrochloride crystals obtained by the preparation method have not only high purity but also no residue of organic solvents. Therefore, clinical medication safetyis improved obviously.

The preparation method of tirofiban hydrochloride freeze-dried powder injection preparation includes the following steps: using 30-1200g of lactose, adding water for injection, dissolving, adding active carbon, stirring for 10-60 min at 25-100deg.C, filtering and removing carbon, adding 5.62g of tirofiban hydrochloride monohydrate, stirring, adding water for injection to 1500-4000ml, regulating pH value of solution to 2-3, sterile filtering, filling, freeze-drying, squeezing cap and packaging, etc.

The invention relates to injection containing tirofiban hydrochloride and belongs to the field of pharmaceutical preparations. The injection consists of 0.05 to 0.5 percent (w/v) of tirofiban hydrochloride, 5 to 25 percent (v/v) of 1,2-propylene glycol, 5 to 25 percent(v/v) of ethanol and water, and the pH value of the injection is 3.5 to 6.5. When the injection containing the tirofiban hydrochloride is clinically used, the transfusion volume of a patient is lowered, and the injection can also be added in sodium chloride or glucose transfusion for intravenous drip of the patient, so that the patients suitable to be treated by the injection is increased, and the injection is suitable for more patients suffering from acute coronary syndromes.

The invention provides a tirofiban hydrochloride injecta and a preparation method thereof. L-arginine is added into an injecta formula, and compared with a formula in which a pH (Potential Of Hydrogen) buffer solution is used as an accessory and a formula provided with arginine aspirin, insoluble particles of the tirofiban hydrochloride injecta are reduced in the formula with the L-arginine, and particularly, after the standing of the solution, the quantity of the insoluble particles is basically not increased as time goes on, so that the tirofiban hydrochloride injecta is ensured to be safe and effective.

A powder injection for suppressing the thrombocyte coagulation is proportionally prepared from tirofiban hydrochloride, the water for injection and the pharmacologically acceptable carrier chosen from lactose, mannitol, cane sugar, glucose, dextran, hydrolytic gelatin and sodium chloride through proportionally mixing, examining intermediate, adding water, filtering, loading in bottle and vacuum freeze drying.

The invention relates to a tirofiban hydrochloride freeze-dried powder injection preparation and a preparation method thereof. The tirofiban hydrochloride freeze-dried powder injection preparation produced by a freeze-dried technology of the invention greatly enhances solubility of tirofiban hydrochloride; and since the pH of redissolved liquid medicine is within the range of 2.0-8.0 and visible particles and particulate matter satisfy the requirement of the pharmacopeia, the safety of medicine is greatly improved. The tirofiban hydrochloride freeze-dried powder injection preparation has simple preparation, controllable quality, stable physical and chemical properties and safe and effective use.

The invention relates to a tirofiban hydrochloride lyophilization powder injection. A lyophilization excipient which is used in the invention is cysteine hydrochloride, and the weight ratio of tirofiban hydrochloride (by free alkali) to cysteine hydrochloride is 1:0.25-8, preferably 1:0.5-4, and most preferably 1:1-2. The tirofiban hydrochloride lyophilization powder injection of the invention, which has the advantages of stable physical and chemical property and controllable quality, solves an unqualified phenomenon that there are foreign matters when tirofiban hydrochloride is redissolved.

The invention provides a palladium removal method for a preparation process of tirofiban hydrochloride. The method comprises the following steps: N-(butylsulfonyl)-O-[4-(4-piperidynyl)butyl]-L-tyrosine (tirofiban) is added to an organic solution of trialkyl(aryl)phosphine, and the substances are sufficiently stirred and filtered; a filter cake is washed with an organic solvent and dried, and content of remaining palladium is reduced to 1 ppm or lower. Palladium content is reduced for tirofiban hydrochloride prepared with the palladium removal method for the preparation process of tirofiban hydrochloride, and the whole method is simple to operate, has remarkable effect and is applicable to large-scale production.

The invention relates to a method for preparing a compound, in particular to a method for preparing 4-(4-pyridyl)-1-butanol which is a tirofiban hydrochloride intermediate. The preparation method has high yield, causes little waste solid, liquid and gas, ensures high product purity and successfully realizes industrial production.

The invention relates to a new preparation process of tirofiban hydrochloride key intermediate 4-pyridine butanol. The key to the process is to make the reaction intermediate 4-(4-pyridyl)-3-butyn-1-ol into hydrochloride or sulfate to improve its stability, and the corresponding salt can be hydrogenated under normal temperature and pressure to obtain the corresponding Pyridine butanol hydrochloride or sulfate, the latter can prepare high-purity 4-pyridine butanol by distillation under reduced pressure after freeing triethylamine. This route does not involve expensive reagents, has low requirements for equipment, is simple to operate, and is highly feasible for industrial scale-up.

The invention provides a tirofiban hydrochloride intermediate and a preparation method of tirofiban hydrochloride. The content of isomers of the tirofiban hydrochloride intermediate and tirofiban hydrochloride prepared by the method is not higher than 0.5%, preferably not higher than 0.3%, and more preferably not higher than 0.1%; all indexes of the prepared pharmaceutical composition meet the medicinal requirements, the quality is stable in the placing process, and the clinical curative effect and the medication safety can be guaranteed.

A method of preparing tirofiban hydrochloride is provided. The method includes steps of: (a) reacting a chemical compound 5 with n-butylsulfonyl halide under alkaline conditions to produce a chemical compound 4; (b) removing boc protection of the chemical compound 4 under strong acid conditions to obtain a chemical compound 3; (c) hydrolyzing the chemical compound 3 under alkaline conditions to turn the compound 3 from an ester into an acid so as to obtain a chemical compound 2; and (d) acidizing the chemical compound 2 to obtain the tirofiban hydrochloride 1.

The invention belongs to the field of drug analysis. The invention relates to a method for detecting related substances of tirofiban hydrochloride injection, in particular to a method for detecting related substances of tirofiban hydrochloride injection by using high performance liquid chromatography, a chromatographic column taking octadecyl bonded silica gel as a filler is used as a stationary phase, a buffer solution with the pH value of 2.0-3.0 is used as a mobile phase A, an organic solvent is used as a mobile phase B, and the detection wavelength is 222-240nm. The detection method can effectively detect the related substances of the tirofiban hydrochloride injection, has strong specificity and high sensitivity, and is suitable for detecting the related substances of the tirofiban hydrochloride injection.

The invention provides a drying method for tirofiban hydrochloride. A tirofiban hydrochloride wet product is subjected to fluidized drying through an efficient fluidized drying machine, wherein the drying temperature in the efficient fluidized drying machine is 40-50 DEG C, the drying time is 10-20 minutes, and the air flow is 30-70 m3/h. The tirofiban hydrochloride prepared through the drying method for the tirofiban hydrochloride is low in water content, is an off-white solid in appearance, meets the requirement for preparing a tirofiban hydrochloride sodium chloride injection, and has the advantages of being not likely to be caked and being low in impurity content.

The invention belongs to the field of medicine synthesis, and particularly relates to a synthesis method of a tirofiban hydrochloride intermediate III. The method comprises: under the action of a sodium borohydride reduction system, reducing an intermediate I to obtain an intermediate II, performing a chlorination reaction on the intermediate II and SOCl2 in the presence of Lewis acid chloride toobtain an intermediate III, performing etherification on the intermediate III and N-butyl sulfonyl-L-tyrosine in the presence of an iodination reagent, and performing hydrogenation and salification toobtain tirofiban hydrochloride. The method has the advantages of mild reaction conditions, simple process operation, no need of column chromatography purification in the intermediate steps, reactionyield increase, high product purity, meeting of the use requirements of pharmacopeia standard bulk drugs in injections, substantial improvement of the safety of clinical medication, and suitableness for industrial production.

The invention provides a method for preparing related substances of raw material medicine tirofiban hydrochloride. The related substance is never reported by other literature documents. The synthesis and research of the related substance are beneficial to improving the quality and medication safety of the bulk drug tirofiban hydrochloride.

The invention relates to a method for preparing tirofiban hydrochloride. The method comprises the following steps: carrying out a condensation reaction between 4-pyridine butanol or 4-(pyridine-4-yl)-butyl-3- alkynyl-1-ol and (S)-3-(4-halogenated phenyl)-2-(n-butylsulfonylamino)-propionate in the presence of a copper reagent/alkali/additive/solvent to generate (S)-2-(n-butylsulfonylamino)-3-(4-(4-(pyridine-4-yl)butoxy)phenyl)-propionate or (S)-2-(n-butylsulfonylamino)-3-(4-((4-(pyridine-4-yl)-butyl-3-alkynyl-1-yl)oxo) phenyl) propionate.